An Aer Lingus flight from New York was evacuated during a stopover in western Ireland on Friday morning following a bomb threat, airport authorities said.
A search of the plane and baggage at Shannon airport found nothing alarming, and the security alert was ended shortly before noon, Aer Lingus said.
The 239 passengers aboard the plane, Aer Lingus flight 112 from John F Kennedy airport in New York, were evacuated during a scheduled stop at 1220 IST at Shannon, said airport spokesman Eugene Pratt.
The threat "came to a police station in Dublin, and referred to some explosives aboard that specific flight," Pratt said. Aer Lingus said police received the call at about 0830 IST.
Dick Butler, head of ground operations with Aer Lingus, said a man with a strong Dublin accent told Gardai there was a liquid explosive on board the aircraft.
No trace of explosives was found in the initial search, and all baggage was cleared for an onward flight to Dublin, said Gillian Culhane, an Aer Lingus spokeswoman in Dublin.
"All passengers disembarked the aircraft and were interviewed in the terminal building," Aer Lingus said.
"Security authorities carried out a full security scan of the aircraft. Following a full search of the aircraft the security alert was stood-down at 11.47 am (local time) and the aircraft has returned to service," Aer Lingus said.
"It wasn't an emergency landing. It wasn't a red alert. The flight was coming here anyway," Pratt said. The aircraft was parked at a remote stand as a precaution, he said.
Passengers who were ticketed to go on to Dublin had all been cleared to continue their flight, said Gillian Culhane, an Aer Lingus spokeswoman in Dublin.